Bicentennial book on the origin of the study of gems , jewels, and precious . Rare illustrations from old books Joseph O. Gill BSC, GG, FGA, Gemologist, Retired director of Jewelry for Sotheby's, North America GO TOO: https://archive.org/search.php?query=joseph%20O.%20Gill to see the many other interesting text that I have contributed to this wonderful web site. -----------------------------------------------------------------------------